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The firing rates of 100 neurons are recorded in a particular region of the brain of a monkey under each of two experimental conditions. The number of neurons in which the firing rate is greater in Condition 1 than in Condition 2 is counted. Suppose that in the population of neurons the probability of a higher firing rate for Condition 1 is 0.58.
a) What is the probability that exactly 90 out of the 100 have higher firing rates for Condition 1? (binomial distribution)
b) What is the probability that at least 40 but no more than 60 neurons have higher firing rates for Condition 1? (40<=x<60)
c) What is the number of neurons n such that the probability of more than n neurons have higher firing rates for Condition 1is 0.99?
For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.3770. Find value of Z? For some value of Z, the probability that a standard normal variable is below Z is 0.2090. Find value of Z?
Commonwealth Edison wants to identify its heaviest users, which are those that are in the top 6% of electric consumption. How many kilowatt hours in January would qualify for the heavy user classification?
The sample yielded a mean content of 19.88 ounces with a standard deviation of 0.35 ounces. At 95% confidence using the p-value approach, test the hypothesis.
In your workplace? Elsewhere in the business sector? In your education (during your UOPX degree program)? In politics? Explain your response.
Describe what the researcher must do if one of the requirements is not met and give illustrations.
Over the past 50 years, the number of hurricanes that have been reported are as follows: 9 times there were 7 hurricanes, 14 times there were 8 hurricanes, 19 times there were 11 hurricanes, and in the remaining years there were 14 hurricanes. Wha..
The NY Dept of Motor Vehicles (DMV) designs its license plates with space for 7 letters or numerals. In the most recent iteration, the DMV uses three letters followed by 4 numbers.
Using Binomial approximation, find the proportion of the days that will be rejected.
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcoxon rank-sum test, evaluate the significance of the results, assuming there are no ties.
According to Advertising Age, average base salary for women working as copywriters in advertising firms is higher than average base salary for men. The average base salary for women is $67,000 and the average base salary for men is $65,500 (Workin..
Customer's arrive at See's Candy Store at a rate of 2 every 5 minutes. What is the probability that no customers will arrive in a 5 minute period?
In a certain distribution of numbers the mean is 60 with a standard deviation of 8. Use Chebyshevs theorum to tell the probability that a number lies in each interval.
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